Test error in Laravel

I am trying to test that a user can create a pin but I keep getting this error.

1) Tests\Feature\CreatePinTest::an_authorized_user_can_create_a_pin
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
-'http://localhost/pins'
+'http://localhost/pins/1'

here is my test

/** @test */
function an_authorized_user_can_create_a_pin()
{
    $this->withoutExceptionHandling();
    $user = create('App\User');
    $this->be($user);

    $pin = make('App\Pin');

    $response = $this->post('/pins/create', $pin->toArray());

    $response->assertRedirect(route('pins.show', ['id' => $pin->id]));

    $response->assertSee($pin->title)
             ->assertSee($pin->link);
}

Here is the routes

Route::post('/pins/create', 'PinsController@store');
Route::get('/pins/{pin}', 'PinsController@show')->name('pins.show');

Here is the controller

/**
 * Store a newly created resource in storage.
 *
 * @param  \Illuminate\Http\Request  $request
 * @return \Illuminate\Http\Response
 */
public function store(Request $request)
{
    $this->validate($request, [
        'title' => 'required|max:200',
        'link' => 'required|max:255'
    ]);

    $pin = new Pin();

    $pin->title = $request->title;
    $pin->link = $request->link;
    $pin->user_id = auth()->id();

    $pin->save();

    return redirect("/pins/{$pin->id}");
}

What I want to happen is what the error Actually gets but I can't figure out how to adjust my test for that.